fix: Windows core build, embedded init, byte-exact paths, version info

Closes the remaining core/lib/termio/GTK rows (final-Z2.md):
- ghostty-core compiles for Windows (Unix-only exec fields and file
  modes gated); checked with cargo check --target x86_64-pc-windows-gnu.
- Embedded init: ensure_locale, SIGPIPE ignored in ghostty_init for
  C/Swift hosts, Apple crash tags; the argv passed to ghostty_init feeds
  ghostty_config_load_cli_args; ghostty_config_load_file accepts
  non-UTF-8 paths.
- OSC 7 pwd, embedded surface cwd/command/env/initial input,
  ghostty_surface_text and GTK file drops keep raw bytes.
- XTVERSION, TERM_PROGRAM_VERSION, the About dialog and crash metadata
  use ghostty_build_info instead of hardcoded versions.

Test Plan:
- cargo test --workspace (3327 passed)
- cargo clippy --workspace --all-targets -- -D warnings

crates/ghostty-core/Cargo.toml

@@ -14,6 +14,7 @@ ghostty-datastruct.workspace = true
 ghostty-font.workspace = true
 ghostty-inspector.workspace = true
 ghostty-input.workspace = true
+ghostty-build-info.workspace = true
 ghostty-os.workspace = true
 ghostty-renderer.workspace = true
 ghostty-terminal.workspace = true

crates/ghostty-core/src/global.rs

@@ -116,7 +116,7 @@ pub struct GlobalState {
 static STATE: OnceLock<GlobalState> = OnceLock::new();
 
 /// Options for [`init`].
-#[derive(Clone, Copy, Default)]
+#[derive(Clone, Default)]
 pub struct InitOptions {
     /// A CLI action is being executed: disable stderr logging by default
     /// since the action writes to stderr/stdout itself.
@@ -126,6 +126,32 @@ pub struct InitOptions {
     /// `apprt.runtime.resourcesDir`, e.g. GTK's Flatpak host path lookup).
     /// `None` uses the generic `ghostty_os::resourcesdir::resources_dir`.
     pub resources_dir: Option<fn() -> std::io::Result<ResourcesDir>>,
+
+    /// Crash reporting metadata (version, build mode, runtime, font backend
+    /// and renderer tags; Zig: `build_config`). `None` uses
+    /// [`default_crash_options`].
+    pub crash: Option<ghostty_crash::Options>,
+}
+
+/// Crash metadata for this build when the caller supplies none: the
+/// version from the shared build info and the compile-time platform
+/// defaults (Metal + CoreText on Apple targets, fontconfig + OpenGL
+/// elsewhere).
+#[must_use]
+pub fn default_crash_options() -> ghostty_crash::Options {
+    let mut o = ghostty_crash::Options {
+        release: ghostty_build_info::VERSION_STRING.to_owned(),
+        build_mode: ghostty_build_info::BUILD_MODE
+            .trim_start_matches('.')
+            .to_owned(),
+        ..ghostty_crash::Options::default()
+    };
+    if cfg!(target_vendor = "apple") {
+        "none".clone_into(&mut o.app_runtime);
+        "coretext".clone_into(&mut o.font_backend);
+        "metal".clone_into(&mut o.renderer);
+    }
+    o
 }
 
 /// The global state. If [`init`] was never called, a default state (no
@@ -182,13 +208,17 @@ fn init_with(opts: InitOptions, default_logging: Logging) -> &'static GlobalStat
         let rlimits = ResourceLimits::init();
 
         // Initialize our crash reporting.
-        if let Err(err) = ghostty_crash::init(&ghostty_crash::Options {
-            release: ghostty_termio::stream_handler::VERSION_STRING.to_owned(),
-            ..ghostty_crash::Options::default()
-        }) {
+        let crash_opts = opts.crash.clone().unwrap_or_else(default_crash_options);
+        if let Err(err) = ghostty_crash::init(&crash_opts) {
             log::warn!("sentry init failed, no crash capture available err={err}");
         }
 
+        // We need to make sure the process locale is set properly. Locale
+        // affects a lot of behaviors in a shell.
+        if let Some(locale) = ghostty_os::ensure_locale() {
+            log::debug!("locale set locale={locale}");
+        }
+
         // Find our resources directory once for the app so every launch
         // hereafter can use this cached value.
         let discover = opts
@@ -352,6 +382,19 @@ mod tests {
         assert_eq!(log_scope("other::x"), "other");
     }
 
+    #[test]
+    fn crash_defaults_use_shared_version() {
+        let o = default_crash_options();
+        assert_eq!(o.release, ghostty_build_info::VERSION_STRING);
+        if cfg!(target_vendor = "apple") {
+            assert_eq!(o.renderer, "metal");
+            assert_eq!(o.font_backend, "coretext");
+            assert_eq!(o.app_runtime, "none");
+        } else {
+            assert_eq!(o.renderer, "opengl");
+        }
+    }
+
     #[test]
     fn logging_parse() {
         assert!(Logging::parse("stderr").stderr);

crates/ghostty-core/src/surface/binding.rs

@@ -424,6 +424,7 @@ pub fn write_screen_temp_file(
     loc: WriteScreenLoc,
     emit: WriteScreenFormat,
 ) -> Result<String, CoreError> {
+    #[cfg(unix)]
     use std::os::unix::fs::OpenOptionsExt as _;
 
     // Create a temporary directory to store our scrollback.
@@ -432,12 +433,11 @@ pub fn write_screen_temp_file(
     let file_path = tmp_dir.path().join(&filename);
 
     let result = (|| -> Result<String, CoreError> {
-        let mut file = std::fs::OpenOptions::new()
-            .write(true)
-            .create(true)
-            .truncate(true)
-            .mode(0o600)
-            .open(&file_path)?;
+        let mut opts = std::fs::OpenOptions::new();
+        opts.write(true).create(true).truncate(true);
+        #[cfg(unix)]
+        opts.mode(0o600);
+        let mut file = opts.open(&file_path)?;
         file.write_all(contents.as_bytes())?;
         file.flush()?;
         Ok(std::fs::canonicalize(&file_path)?
@@ -1272,10 +1272,13 @@ mod tests {
         assert!(path.ends_with("screen.txt"));
         let read = std::fs::read_to_string(&path).unwrap();
         assert_eq!(read, s);
-        let mode = std::os::unix::fs::PermissionsExt::mode(
-            &std::fs::metadata(&path).unwrap().permissions(),
-        );
-        assert_eq!(mode & 0o777, 0o600);
+        #[cfg(unix)]
+        {
+            let mode = std::os::unix::fs::PermissionsExt::mode(
+                &std::fs::metadata(&path).unwrap().permissions(),
+            );
+            assert_eq!(mode & 0o777, 0o600);
+        }
         let _ = std::fs::remove_dir_all(std::path::Path::new(&path).parent().unwrap());
     }
 

crates/ghostty-core/src/surface/clipboard.rs

@@ -215,6 +215,12 @@ impl Surface {
         }
     }
 
+    /// [`Surface::complete_clipboard_request`] for a paste of raw bytes
+    /// (Zig passes `[]const u8`; e.g. dropped non-UTF-8 file names).
+    pub fn complete_paste_bytes(&self, data: &[u8], confirmed: bool) -> Result<(), ClipboardError> {
+        self.complete_clipboard_paste(data, confirmed)
+    }
+
     /// Paste text (also the target of `text_callback`).
     pub(crate) fn complete_clipboard_paste(
         &self,
@@ -390,7 +396,13 @@ impl Surface {
 
     /// `textCallback`: text input that is pasted verbatim.
     pub fn text_callback(&self, text: &str) -> Result<(), ClipboardError> {
+        self.text_callback_bytes(text.as_bytes())
+    }
+
+    /// [`Surface::text_callback`] for raw bytes (Zig takes `[]const u8`;
+    /// the embedded `ghostty_surface_text` forwards the host bytes as is).
+    pub fn text_callback_bytes(&self, text: &[u8]) -> Result<(), ClipboardError> {
         let _crash = self.crash_guard();
-        self.complete_clipboard_paste(text.as_bytes(), true)
+        self.complete_clipboard_paste(text, true)
     }
 }

crates/ghostty-core/src/surface/mod.rs

@@ -471,10 +471,15 @@ impl Surface {
                 .and_then(|wd| wd.value())
                 .map(str::to_owned);
             ecfg.resources_dir = global::state().resources_dir.host().map(str::to_owned);
-            ecfg.rt_pre_exec_info = ghostty_termio::command::RtPreExecInfo::init(&config);
-            ecfg.rt_post_fork_info = ghostty_termio::command::RtPostForkInfo::init(&config);
-            ecfg.create_scope = rt_surface.create_scope_fn();
-            ecfg.restore_rlimit = global::state().rlimits.nofile;
+            // The Windows exec backend has no pre-exec/post-fork hooks,
+            // cgroup scopes or rlimits (Zig: Linux/POSIX only).
+            #[cfg(unix)]
+            {
+                ecfg.rt_pre_exec_info = ghostty_termio::command::RtPreExecInfo::init(&config);
+                ecfg.rt_post_fork_info = ghostty_termio::command::RtPostForkInfo::init(&config);
+                ecfg.create_scope = rt_surface.create_scope_fn();
+                ecfg.restore_rlimit = global::state().rlimits.nofile;
+            }
 
             let exec = Exec::new(ecfg)?;
             let args = exec.args().to_vec();
@@ -935,7 +940,9 @@ impl Surface {
             }
 
             Message::PwdChange(w) => {
-                let pwd = String::from_utf8_lossy(w.slice()).into_owned();
+                // Keep the OSC 7 bytes (see `Pwd`): non-UTF-8 bytes are
+                // carried with the reversible byte escape.
+                let pwd = ghostty_os::osbytes::bytes_to_config_string(w.slice());
                 self.perform(RtAction::Pwd(Pwd { pwd }));
             }
 
@@ -1364,7 +1371,14 @@ impl Surface {
     pub fn pwd(&self) -> Option<String> {
         let t = self.lock_terminal();
         let pwd = t.get_pwd()?;
-        Some(String::from_utf8_lossy(pwd).into_owned())
+        Some(ghostty_os::osbytes::bytes_to_config_string(pwd))
+    }
+
+    /// The raw bytes of [`Surface::pwd`] (Zig returns the OSC 7 bytes as is).
+    #[must_use]
+    pub fn pwd_bytes(&self) -> Option<Vec<u8>> {
+        let t = self.lock_terminal();
+        t.get_pwd().map(<[u8]>::to_vec)
     }
 
     /// Returns the x/y coordinate of where the IME (Input Method Editor)
@@ -2055,6 +2069,10 @@ impl CoreSurface for Surface {
         Surface::complete_clipboard_request(self, req, data, confirmed)
     }
 
+    fn complete_paste_bytes(&self, data: &[u8], confirmed: bool) -> Result<(), ClipboardError> {
+        Surface::complete_paste_bytes(self, data, confirmed)
+    }
+
     fn set_clipboard_read_allowed(&self, allow: bool) {
         use ghostty_config::types_b::ClipboardAccess;
         self.set_config_clipboard(

crates/ghostty-core/src/surface/mouse.rs

@@ -1664,7 +1664,7 @@ impl Surface {
                         sel: link.selection,
                         trim: false,
                     });
-                    let pwd = t.get_pwd().map(|p| String::from_utf8_lossy(p).into_owned());
+                    let pwd = t.get_pwd().map(ghostty_os::osbytes::bytes_to_config_string);
                     resolve_path_for_opening(pwd.as_deref(), &str).unwrap_or(str)
                 }
 

crates/ghostty-core/tests/e2e_term.rs

@@ -114,6 +114,24 @@ fn pwd_osc7() {
     assert_eq!(h.surface.pwd().as_deref(), Some("/tmp/a b"));
 }
 
+#[test]
+fn pwd_osc7_keeps_non_utf8_bytes() {
+    let h = harness!(Harness::recorder(
+        r"\033]7;file://localhost/tmp/a%%FFb\033\\",
+        &[]
+    ));
+    let pwd = h.wait_action("pwd", |a| match a {
+        Action::Pwd(p) if !p.pwd.is_empty() => Some(p.pwd.clone()),
+        _ => None,
+    });
+    assert_eq!(
+        ghostty_os::osbytes::config_str_to_bytes(&pwd),
+        b"/tmp/a\xffb"
+    );
+    assert_eq!(h.surface.pwd_bytes().as_deref(), Some(&b"/tmp/a\xffb"[..]));
+    assert_eq!(h.surface.pwd().as_deref(), Some(pwd.as_str()));
+}
+
 #[test]
 fn bell_rings_once_per_burst() {
     let h = harness!(Harness::recorder(r"\007", &[]));